I think learning online has many advantages. Firstly, it is pretty convenient to teachers and students to use the online resources and put into their studies. It makes a lot of senses. Secondly, students can chat online with their teachers or classmate. If they have any difficulties about study, they can share ideas to each other and then maybe the problems will be solved. Finally, students can watch English movies and books on the Internet. They also can do some online tests about English to know their own standard. It is useful.But on the other hand, learning English online maybe a waste of time. Some students cannot control themselves well so that they may be addicted to the Internet. If they do not use the Internet properly, maybe it will be very harmful.So we must use the Internet as a tool properly and make it helpful to us to learn English.